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Cassava is infected by numerous geminiviruses in Africa and India that cause devastating losses to poor farmers. We here describe the molecular diversity of seven representative cassava mosaic geminiviruses (CMGs) infecting cassava from multiple locations in Tanzania. We report for the first time...
Virus diseases present major constraints to production of okra (Abelmoschus esculentus) in Cameroon. However, the identity of these viruses had not been determined prior to this study. Detection of begomoviruses in okra using polymerase chain reaction (PCR) has been problematic because of interfe...
Les maladies associees aux virus constituent des contraintes majeures a la production du gombo (Abetmoschusescu/enlus) au Cameroun. Toutefois, l'identite de ces virus n'a jusqu'ici pas ete d6termin6e. La d6tection des begomoviruschez le gombo par R6action de Polymerisation en Chaine (RPC) s'avere...
Cassava mosaic disease (CMD) is the major production constraint on cassava ( Manihot esculenta ) in Angola. Previous reports derived from single samples recorded the presence of African cassava mosaic virus (ACMV) and East African cassava mosaic virus (EACMV) in Angola. Regional CMD monitoring in...
As a case study to document the current characteristics of cassava mosaic virus disease (CMD) in post epidemic areas, surveys were carried out, in 2003 and2004, in Siaya District of western Kenya. This was an area affected by a severe CMD pandemic in the late 1990s. Data recorded on cassava varie...
Diagnostic surveys were conducted in 2002 and 2003 in order to provide a comprehensive and detailed assessment of the status of cassava mosaic disease (CMD) in the Republic of Congo (ROC) and to determine if the disease was spreading. In 2002, 105 farmers’ fields were assessed in the four major c...
The ecology of the Bemisia tabaci/cassava/African cassava mosaic virus (ACMV) pathosystem is reviewed briefly with special attention given to the parameters affecting the pattern of population development of B. tabaci. Significant gaps in our understanding of this system remain, particularly conc...
Cassava mosaic disease (CMD), recognized in Africa for more than a century, is now known to be caused by a group of geminiviruses in the genus Begomovirus from the family Geminiviridae. All are transmitted in a persistent manner by the whitefly vector, Bemisia tabaci. Structurally, cassava mosaic...
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